#! /bin/sh
#
# $Id: mkimapdcert.in,v 1.7 2007/11/04 20:49:58 mrsam Exp $
#
# Copyright 2000-2007 Double Precision, Inc.  See COPYING for
# distribution information.
#
# This is a short script to quickly generate a self-signed X.509 key for
# IMAP over SSL.  Normally this script would get called by an automatic
# package installation routine.

if test "openssl" = "openssl"
then
	test -x /usr/sbin/openssl || exit 0
else
	test -x /usr/local/bin/certtool || exit 0
fi

prefix="/usr/local"
SSLDIR="/etc/ssl/private"

if test -f ${SSLDIR}/imapd.pem
then
	echo "${SSLDIR}/imapd.pem already exists."
	exit 1
fi

umask 077

cleanup() {
	rm -f ${SSLDIR}/imapd.pem
	rm -f ${SSLDIR}/imapd.rand
	rm -f ${SSLDIR}/imapd.key
	rm -f ${SSLDIR}/imapd.cert
	exit 1
}

cd ${SSLDIR}

if test "openssl" = "openssl"
then
	cp /dev/null ${SSLDIR}/imapd.pem
	chmod 600 ${SSLDIR}/imapd.pem
	chown _courier ${SSLDIR}/imapd.pem

	dd if=/dev/arandom of=${SSLDIR}/imapd.rand count=1 2>/dev/null
	/usr/sbin/openssl req -new -x509 -days 365 -nodes \
		  -config /etc/courier/imapd.cnf -out ${SSLDIR}/imapd.pem -keyout ${SSLDIR}/imapd.pem || cleanup
	/usr/sbin/openssl gendh -rand ${SSLDIR}/imapd.rand 512 >>${SSLDIR}/imapd.pem || cleanup
	/usr/sbin/openssl x509 -subject -dates -fingerprint -noout -in ${SSLDIR}/imapd.pem || cleanup
	rm -f ${SSLDIR}/imapd.rand
else
	cp /dev/null ${SSLDIR}/imapd.key
	chmod 600 ${SSLDIR}/imapd.key
	cp /dev/null ${SSLDIR}/imapd.cert
	chmod 600 ${SSLDIR}/imapd.cert

	/usr/local/bin/certtool --generate-privkey --outfile imapd.key
	/usr/local/bin/certtool --generate-self-signed --load-privkey imapd.key --outfile imapd.cert --template /etc/courier/imapd.cnf
	/usr/local/bin/certtool --generate-dh-params >>imapd.cert
	cat imapd.key imapd.cert >imapd.pem
	rm -f imapd.key imapd.cert
fi
